Do YOU Know the Differences in Silicone?

There are 4 grades of silicone.Non-food grade，FDA food grade， LFGB food grade and medical grade.

General silica gel can reach food grade.Non-food grade silica gel is add glue powder to ordinary silica gel.This way the cost will be lower and the price will be cheaper.If there are some customers who don't need food grade,Factories will do this to reduce costs.

Ordinary silicone can only meet FDA standards.If you need to meet the standard of LFGB standard，It is necessary to purchase a better European standard material silicone.The price of the European standard will be much more expensive.LFGB silicone standard is more transparent relative to the FDA standard.

Medical grade silicone like the silicone bottle nipples which we use in life, And some medical equipment.This usually uses liquid silica gel.

Silica gel is divided into liquid silica gel and solid silica gel.Liquid silica gel has better fluidity, The color will not change, and the breathability is better.Solid silica gel is solid and has no fluidity, and is mainly used for daily necessities, like kitchen, home.

Transparent silicone products will turn yellow over time, This is not a product quality problem, this is the characteristics of silicone.The reason for this is that the silicone rubber needs to be added to the vulcanizer when it is molded, and the vulcanizing agent will turn yellow over time.The way to prevent the yellowing of transparent silica gel is to add an anti-yellowing vulcanizing agent.